Thanks for reaching out to us for your concerns.
I would request you to kindly update to the latest available version of Adobe Acrobat DC using “Check for updates”
Also please send a screen recording video of the issue that you are facing to us at email@example.com
An error occurred while saving the commentz Hessian commented
Running Adobe Acrobat Pro DC 2019.021.20061
Same problem resizing window. Often takes multiple attempts at grabbing the edge of the screen before it will actually start to resize and when it finally does start to move it lags severely. Very frustrating to use.
Going to look for a previous (pre DC) version to install, since nothing is being done about this issue.
Please don't respond by apologizing about the frustration. Just fix the problem or at least let us know someone is working on it.